Dual-power supply power supply control system

Abstract

The invention provides a power supply control system with double power supplies. The power supply control system comprises an execution switch unit, an execution motor, a motor switch unit, a tripping unit and an alarm switch unit, the execution switch unit is used for controlling connection and disconnection of lines between the first power supply and the load and between the second power supply and the load under the driving of the execution motor; the motor switch unit is electrically connected with the first power supply and the second power supply through the alarm switch unit, and is used for controlling the execution motor to carry out corresponding driving control according to the accessed power supply, and is disconnected after the execution motor completes the corresponding driving control; and the tripping unit is used for opening the execution switch unit and disconnecting the alarm switch unit when the power supply fails. When the tripping unit is tripped due to a power supply fault, the alarm switch unit is switched off synchronously, and at the moment, even if the motor switch unit is reset to a closed state, the fault power supply cannot be connected to the execution motor again, so that the execution motor cannot be powered on again based on the fault power supply, and the electrical risk of the execution motor is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply, and particularly to a power supply control system for a dual power supply. Background Art

[0002] In the power supply scenario of a dual power supply, a motor switch unit is usually used to connect to the dual power supply, and the motor switch unit controls the execution motor to rotate in the corresponding direction according to the connected power supply, so that the execution motor drives the corresponding execution switch unit to be in the corresponding switch state, thereby realizing the selection of a certain power supply. The motor switch unit, the execution motor and the execution switch unit can form an "automatic transfer switch" to achieve the purpose of controlling the power supply after a certain power supply is connected.

[0003] When a fault occurs in the main circuit where the load is located, such as a fault in the connected first power supply or second power supply, it will cause the corresponding tripping unit to trip, so that the execution switch unit resets to the double-break state, the execution motor resets and rotates to the double-break position, and the motor switch unit resets to the closed state. This will cause the execution motor to be powered on again based on the faulty power supply, increasing the electrical risk of the execution motor. Summary of the Invention

[0004] Aiming at the deficiencies in the prior art, the present invention provides a power supply control system for a dual power supply.

[0005] In one embodiment, the present invention provides a power supply control system for a dual power supply, which includes an execution switch unit, an execution motor, a motor switch unit, a tripping unit and an alarm switch unit;

[0006] The execution switch unit is respectively used for electrically connecting with the first power supply, the second power supply and the load and mechanically connecting with the execution motor, and is used for opening and closing under the drive of the execution motor to control the on-off of the lines between the first power supply and the second power supply and the load respectively;

[0007] The motor switch unit is respectively electrically connected with the execution motor and the alarm switch unit and mechanically connected with the execution motor, and is used for electrically connecting with the first power supply and the second power supply through the alarm switch unit, and for controlling the execution motor to perform corresponding drive control according to the connected first power supply or second power supply and disconnecting after the execution motor completes the corresponding drive control;

[0008] The tripping unit is respectively mechanically connected with the execution switch unit and the alarm switch unit, and is used for tripping the execution switch unit and disconnecting the alarm switch unit when a fault occurs in the first power supply or the second power supply.

[0009] In one embodiment, the motor switch unit includes a first motor switch unit, a second motor switch unit, and a rotating unit, and the alarm switch unit includes a first alarm switch unit and a second alarm switch unit that are respectively mechanically connected to the tripping unit;

[0010] The first access end of the first motor switch unit is used to access the first power supply through the first alarm switch unit, and the second access end of the first motor switch unit is electrically connected to the first power supply end of the actuating motor; the first access end of the second motor switch unit is used to access the second power supply through the second alarm switch unit, and the second access end of the second motor switch unit is electrically connected to the second power supply end of the actuating motor;

[0011] The rotating unit is fixedly connected to the rotating shaft of the actuating motor, and is used to control the first motor switch unit to disconnect based on the drive of the actuating motor in the first rotation direction after the actuating motor accesses the first power supply through the first motor switch unit; or is used to control the second motor switch unit to disconnect based on the drive of the actuating motor in the second rotation direction after the actuating motor accesses the second power supply through the second motor switch unit.

[0012] In one embodiment, the first motor switch unit includes a first microswitch, the second motor switch unit includes a second microswitch, and the rotating unit includes a rotating dial;

[0013] The first access end of the first microswitch is used to be electrically connected to the live wire of the first power supply through the first alarm switch unit, and the second access end of the first microswitch is used to be electrically connected to the first live wire power supply end of the actuating motor;

[0014] The first access end of the second microswitch is used to be electrically connected to the live wire of the second power supply through the second alarm switch unit, and the second access end of the second microswitch is used to be electrically connected to the second live wire power supply end of the actuating motor;

[0015] The neutral wire power supply end of the actuating motor is used to be respectively electrically connected to the neutral wire of the first power supply and the neutral wire of the second power supply.

[0016] In one embodiment, the dual-power supply control system further includes a control unit and a channel switching unit;

[0017] The first input end of the channel switching unit is used to access the first power supply, the second input end of the channel switching unit is used to access the second power supply, the first output end of the channel switching unit is electrically connected to the first access end of the first alarm switch unit, the second output end of the channel switching unit is electrically connected to the first access end of the second alarm switch unit, and the controlled end of the channel switching unit is electrically connected to the output end of the control unit;

[0018] The control unit is used to control the switching state of the channel switching unit to output the first power supply to the first alarm switch unit or output the second power supply to the second alarm switch unit.

[0019] In one embodiment, the channel switching unit includes a driving subunit and a relay;

[0020] The input end of the driving subunit is electrically connected to the output end of the control unit, the output end of the driving subunit is electrically connected to the coil part in the relay, the first input end of the contact part in the relay is used to access the first power supply, the second input end of the contact part in the relay is used to access the second power supply, the first output end of the contact part in the relay is electrically connected to the first access end of the first alarm switch unit, and the second output end of the contact part in the relay is electrically connected to the first access end of the second alarm switch unit.

[0021] In one embodiment, the driving subunit includes a triode and a driving chip;

[0022] The base of the triode is electrically connected to the output end of the control unit, the collector of the triode is electrically connected to the input end of the driving chip, the emitter of the triode is used for grounding, and the output end of the driving chip is used to be electrically connected to the coil part in the relay.

[0023] In one embodiment, the power supply control system with dual power supplies further includes a switching power supply unit;

[0024] The input end of the switching power supply unit is used to access the first power supply and / or the second power supply, and the output end of the switching power supply unit is electrically connected to the power supply end of the control unit;

[0025] The switching power supply unit is used to convert the alternating current input by the first power supply or the second power supply and output the corresponding direct current to the control unit.

[0026] In one embodiment, the switching power supply unit includes a varistor, a rectifying diode, an input filtering component, a switching power supply chip, and an output filtering component;

[0027] The first end of the varistor is electrically connected to the anode of the rectifying diode and is used to be electrically connected to the live wire of the first power supply and / or the live wire of the second power supply, and the second end of the varistor is electrically connected to the second input end of the input filtering component and is used to be electrically connected to the neutral wire of the first power supply and / or the neutral wire of the second power supply;

[0028] The cathode of the rectifying diode is electrically connected to the first input end of the input filtering component, the first output end of the input filtering component is electrically connected to the input end of the switching power supply chip, the output end of the switching power supply chip is electrically connected to the first input end of the output filtering component, and the output end of the output filtering component is electrically connected to the power supply end of the control unit;

[0029] The second output end of the input filtering component, the grounding end of the switching power supply chip, the second input end of the output filtering component, and the second output end of the output filtering component are respectively used for grounding.

[0030] In one embodiment, the power supply control system with dual power supplies further includes an acquisition unit;

[0031] The acquisition unit is electrically connected to the input end of the control unit, and is used for acquiring the power supply signals of the first power supply and / or the second power supply and feeding them back to the control unit.

[0032] In one embodiment, the acquisition unit includes a first voltage-dividing resistor, a second voltage-dividing resistor, a filtering capacitor and a clamping device;

[0033] The first end of the first voltage-dividing resistor is used for being electrically connected to the live wire of the first power supply and / or the live wire of the second power supply. The second end of the first voltage-dividing resistor is electrically connected to the first end of the filtering capacitor, the first end of the clamping device and the first end of the second voltage-dividing resistor respectively, and is used for being electrically connected to the input end of the control unit;

[0034] The second end of the filtering capacitor is used for grounding. The second end of the clamping device is used for accessing a clamping voltage, and the second end of the second voltage-dividing resistor is used for accessing a reference voltage.

[0035] Through the above-mentioned power supply control system with dual power supplies, an alarm switch unit connected in series with the motor switch unit and mechanically linked with the tripping unit is added. When the tripping unit performs a tripping action due to a power supply fault, the alarm switch unit will be synchronously disconnected. At this time, even if the motor switch unit is reset to the closed state, the faulty power supply will not be reconnected to the actuating motor, so that the actuating motor will not be re-powered based on the faulty power supply, reducing the electrical risk of the actuating motor. Description of the Drawings

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0037] Figure 1 It is a schematic structural diagram of a power supply control system with dual power supplies in an embodiment of the present invention;

[0038] Figure 2 It is a schematic structural diagram of an alarm switch unit and a motor switch unit in an embodiment of the present invention;

[0039] Figure 3 It is a schematic structural diagram of a motor switch unit including a micro switch in an embodiment of the present invention;

[0040] Figure 4 It is a schematic structural diagram of an embodiment of the present invention further including a channel switching unit and a control unit;

[0041] Figure 5 Schematic diagram of the specific circuit of the power supply control system with dual power supplies in an embodiment of the present invention;

[0042] Figure 6 Schematic diagram of the structure further including a switching power supply unit and a collection unit in an embodiment of the present invention;

[0043] Figure 7 Schematic diagram of the specific circuit of the switching power supply unit in an embodiment of the present invention;

[0044] Figure 8 Schematic diagram of the specific circuit of the collection unit in an embodiment of the present invention;

[0045] Figure 9 Schematic diagram of the specific circuit of the first indication unit in an embodiment of the present invention;

[0046] Figure 10 Schematic diagram of the specific circuit of the second indication unit in an embodiment of the present invention. Detailed implementation manners

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present invention.

[0048] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "a plurality of" is two or more unless otherwise specifically defined. In the present application, the term "exemplary" is used to mean "serving as an example, illustration, or description". Any embodiment described as "exemplary" in the present application is not necessarily to be construed as more preferred or more advantageous than other embodiments. In order for any person skilled in the art to implement and use the present invention, the following description is given. In the following description, details are set forth for purposes of explanation. It should be understood that those of ordinary skill in the art can recognize that the present invention can be implemented without the use of these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed in the present application.

[0049] In a first aspect, as Figure 1 shown, in one embodiment, the present invention provides a power supply control system with dual power supplies. The power supply control system with dual power supplies includes an execution switch unit, an execution motor, a motor switch unit, a tripping unit, and an alarm switch unit.

[0050] Wherein, Figure 1 The solid lines shown in indicate the electrical connection relationships between the components, and the dashed lines indicate the mechanical connection relationships between the components.

[0051] The execution switch unit is respectively used to be electrically connected to the first power supply, the second power supply, and the load and mechanically connected to the execution motor, and is used to perform opening and closing under the drive of the execution motor to control the on-off of the lines between the first power supply and the second power supply and the load respectively.

[0052] Among them, when the actuator motor is powered on and rotates in the first rotation direction, due to the mechanical connection between the actuator motor and the actuator switch unit, based on the rotation of the actuator motor, the actuator switch unit can be driven to conduct the circuit between its first input terminal and output terminal, so as to transmit the electric energy output by the first power supply to the load. At this time, it can be understood that the closing of the power supply circuit of the first power supply is realized. Similarly, when the actuator motor is powered on and rotates in the second rotation direction, based on the rotation of the actuator motor, the actuator switch unit can be driven to conduct the circuit between its second input terminal and output terminal, so as to transmit the electric energy output by the second power supply to the load. At this time, it can be understood that the closing of the power supply circuit of the second power supply is realized.

[0053] The motor switch unit is electrically connected to the actuator motor and the alarm switch unit respectively and mechanically connected to the actuator motor, and is used to be electrically connected to the first power supply and the second power supply through the alarm switch unit, and is used to control the actuator motor to perform corresponding drive control according to the accessed first power supply or second power supply and disconnect after the actuator motor completes the corresponding drive control.

[0054] Among them, when the alarm switch unit is conducting, the motor switch unit can output the accessed first power supply or second power supply to the actuator motor.

[0055] Specifically, the actuator motor includes a first power supply terminal and a second power supply terminal. After the first power supply terminal of the actuator motor accesses the power supply, it can rotate in the first rotation direction, and after the second power supply terminal of the actuator motor accesses the power supply, it can rotate in the second rotation direction. That is to say, the actuator motor will rotate in different rotation directions according to the accessed first power supply and second power supply.

[0056] In the above process, when the motor switch unit accesses the first power supply through the alarm switch unit, it can power on the first power supply terminal of the actuator motor, so as to control the actuator motor to rotate in the first rotation direction. Combining the actions of the above actuator switch unit, the closing of the power supply circuit of the first power supply can be realized, so as to realize the effective power supply of the first power supply to the load. Similarly, when the motor switch unit accesses the second power supply through the alarm switch unit, it can power on the second power supply terminal of the actuator motor, so as to control the actuator motor to rotate in the second rotation direction. Combining the actions of the above actuator switch unit, the closing of the power supply circuit of the second power supply can be realized, so as to realize the effective power supply of the second power supply to the load.

[0057] It should be noted that the motor switch unit is also mechanically connected to the actuator motor. The motor switch unit can be understood as being in a normally closed state. When the first power supply or the second power supply is accessed and output to the actuator motor, causing the actuator motor to rotate, when it rotates to the closing of the actuator switch unit, it can drive the motor switch unit to disconnect, so as to avoid the continuous rotation of the actuator motor and realize the stability of closing.

[0058] In summary, the execution switch unit, the execution motor, and the motor switch unit constitute the "automatic transfer switch" in the dual-power scenario, which can control the closing of the power supply circuit of the corresponding power supply according to the connected power supply.

[0059] The tripping unit is mechanically connected to the execution switch unit and the alarm switch unit respectively, and is used to trip the execution switch unit and disconnect the alarm switch unit when the first power supply or the second power supply fails.

[0060] Among them, the tripping unit is used to implement the protection function of the load power supply. When the first power supply or the second power supply used to supply power to the load fails, it trips. Its tripping action can, based on the mechanical connection with the execution switch unit, cause the execution switch unit to switch from the closed state to the open state. As mentioned above, the execution switch unit is also mechanically connected to the execution motor, so that the execution motor also rotates correspondingly. As also mentioned above, the execution motor is also mechanically connected to the motor switch unit, so that the motor switch unit also switches from the open state after closing to the closed state. If the alarm switch unit is in the conducting state at this time, the faulty power supply will be output to the execution motor through the alarm switch unit and the motor switch unit, thus posing a relatively high electrical risk to the execution motor.

[0061] To solve the above problems, in this embodiment, the added alarm switch unit is mechanically connected to the tripping unit and has the linkage ability. When the tripping unit executes the tripping action, it will drive the alarm switch unit to act simultaneously. After the tripping unit completes the tripping action, the alarm switch unit switches from the closed state to the open state. At this time, although the motor switch unit is in the closed state, the alarm switch unit is connected in series in the power supply circuit of the execution motor, so that the faulty power supply cannot be output to the execution motor.

[0062] Through the above power supply control system for the dual power supply, an alarm switch unit connected in series with the motor switch unit and mechanically linked with the tripping unit is added. When the tripping unit executes the tripping action due to a power supply failure, the alarm switch unit will synchronously disconnect. At this time, even if the motor switch unit resets to the closed state, the faulty power supply will not be reconnected to the execution motor, so that the execution motor will not be powered on again based on the faulty power supply, reducing the electrical risk of the execution motor.

[0063] As Figure 2 shown, in one embodiment, the motor switch unit includes a first motor switch unit, a second motor switch unit, and a rotating unit, and the alarm switch unit includes a first alarm switch unit and a second alarm switch unit that are respectively mechanically connected to the tripping unit.

[0064] The first access terminal of the first motor switch unit is used to access the first power supply through the first alarm switch unit, and the second access terminal of the first motor switch unit is electrically connected to the first power supply terminal of the actuating motor; the first access terminal of the second motor switch unit is used to access the second power supply through the second alarm switch unit, and the second access terminal of the second motor switch unit is electrically connected to the second power supply terminal of the actuating motor;

[0065] The rotating unit is fixedly connected to the rotating shaft of the actuating motor, and is used to control the first motor switch unit to disconnect based on the drive of the actuating motor in the first rotation direction after the actuating motor accesses the first power supply through the first motor switch unit; or is used to control the second motor switch unit to disconnect based on the drive of the actuating motor in the second rotation direction after the actuating motor accesses the second power supply through the second motor switch unit.

[0066] Wherein, since the rotating unit is fixedly connected to the rotating shaft of the actuating motor, when the actuating motor is powered on and rotates, the rotating unit is also driven to rotate. There is a mechanical connection relationship between the rotating unit and the first motor switch unit and the second motor switch unit respectively, so that when the rotating unit rotates in the first rotation direction, it will drive a certain mechanism on the first motor switch unit to act, thereby triggering the first motor switch unit to disconnect; similarly, when the rotating unit rotates in the second rotation direction, it will drive a certain mechanism on the second motor switch unit to act, thereby triggering the second motor switch unit to disconnect.

[0067] Wherein, from the above analysis, it can be seen that the rotation direction of the actuating motor is related to the accessed power supply, and the access of the power supply is related to the corresponding motor switch unit. Taking the access of the first power supply as an example, the first motor switch unit is default in the closed state. When the first power supply outputs electric energy, the actuating motor accesses the first power supply through the first motor switch unit to be powered on. Since the actuating motor is connected through the first power supply terminal, it rotates in the first rotation direction, driving the rotating unit to rotate. After the rotating unit rotates to a certain extent, it triggers the first motor switch unit to disconnect, and at this time the actuating motor is powered off. Similarly, taking the access of the second power supply as an example, the second motor switch unit is default in the closed state. When the second power supply outputs electric energy, the actuating motor accesses the second power supply through the second motor switch unit to be powered on. Since the actuating motor is connected through the second power supply terminal, it rotates in the second rotation direction, driving the rotating unit to rotate. After the rotating unit rotates to a certain extent, it triggers the second motor switch unit to disconnect, and at this time the actuating motor is powered off.

[0068] Combined with the above analysis, when the actuator motor is powered on and rotates in the first rotation direction, based on the rotation of the actuator motor, it can drive the actuator switch unit to conduct the circuit between its first input terminal and output terminal, thereby transmitting the electric energy output by the first power supply to the load. Similarly, when the actuator motor is powered on and rotates in the second rotation direction, based on the rotation of the actuator motor, it can drive the actuator switch unit to conduct the circuit between its second input terminal and output terminal, thereby transmitting the electric energy output by the second power supply to the load.

[0069] It can be seen that the actuator motor realizes the power supply selection for the corresponding load by changing the switch state of the actuator switch unit, and the rotation of the actuator motor is based on the connected power supply. That is to say, when the first power supply is connected, under the action of the first motor switch unit and the rotation unit, it automatically prompts the actuator motor to drive the actuator switch unit to conduct the circuit between its first input terminal and output terminal, and cut off the power after conduction to maintain the current state. Of course, it can also prevent the actuator motor from continuously rotating and damaging related devices. Similarly, when the second power supply is connected, under the action of the second motor switch unit and the rotation unit, it automatically prompts the actuator motor to drive the actuator switch unit to conduct the circuit between its second input terminal and output terminal, and cut off the power after conduction.

[0070] As Figure 3 shown, in one embodiment, the first motor switch unit includes a first micro switch, the second motor switch unit includes a second micro switch, and the rotation unit includes a rotation dial.

[0071] The first access terminal of the first micro switch is used to be electrically connected to the live wire of the first power supply through the first alarm switch unit, and the second access terminal of the first micro switch is used to be electrically connected to the first live wire power supply terminal of the actuator motor.

[0072] The first access terminal of the second micro switch is used to be electrically connected to the live wire of the second power supply through the second alarm switch unit, and the second access terminal of the second micro switch is used to be electrically connected to the second live wire power supply terminal of the actuator motor.

[0073] The neutral wire power supply terminal of the actuator motor is used to be electrically connected to the neutral wire of the first power supply or the neutral wire of the second power supply respectively.

[0074] Among them, when the actuator motor is in the automatic switching mode (that is, automatically performing the corresponding closing operation according to the connected power supply), its neutral wire power supply terminal remains electrically connected to the neutral wire of the first power supply or the neutral wire of the second power supply.

[0075] Further, in the first aspect, only the first microswitch needs to be set to realize the on / off of the line between the first live wire power terminal of the actuating motor and the live wire of the first power supply. When the first microswitch is closed, the live wire and the neutral wire of the first power supply respectively form a loop with the first live wire power terminal and the neutral wire power terminal of the actuating motor, so that the actuating motor rotates in the first rotation direction. Similarly, in the second aspect, only the second microswitch needs to be set to realize the on / off of the line between the second live wire power terminal of the actuating motor and the live wire of the second power supply. When the second microswitch is closed, the live wire and the neutral wire of the second power supply respectively form a loop with the second live wire power terminal and the neutral wire power terminal of the actuating motor, so that the actuating motor rotates in the second rotation direction.

[0076] As Figure 4 shown, in one embodiment, the power supply control system with dual power supplies further includes a control unit and a channel switching unit.

[0077] The first input terminal of the channel switching unit is used to connect to the first power supply, the second input terminal of the channel switching unit is used to connect to the second power supply, the first output terminal of the channel switching unit is electrically connected to the first access terminal of the first alarm switch unit, the second output terminal of the channel switching unit is electrically connected to the first access terminal of the second alarm switch unit, and the controlled terminal of the channel switching unit is electrically connected to the output terminal of the control unit.

[0078] The control unit is used to control the switching state of the channel switching unit to output the first power supply to the first alarm switch unit or output the second power supply to the second alarm switch unit.

[0079] Among them, the control unit can select to connect the actuating motor to the first power supply or the second power supply by controlling the channel state of the channel switching unit. After selecting to connect the first power supply, the first motor switch unit and the rotating unit in the motor switch unit can control the actuating motor to rotate in the first rotation direction according to the specific process mentioned in the above embodiment to realize the conduction of the line between the first power supply and the load. After selecting to connect the second power supply, the second motor switch unit and the rotating unit can control the actuating motor to rotate in the second rotation direction according to the specific process mentioned in the above embodiment to realize the conduction of the line between the second power supply and the load.

[0080] Among them, in this embodiment, the first power supply may refer to the normal power supply, and the second power supply may refer to the backup power supply. When the control unit is not powered on, the channel selection unit defaults to connect to the backup power supply.

[0081] As Figure 5As shown, in one embodiment, the channel switching unit includes a driving subunit and a relay K2. The driving subunit includes a triode Q2 and a driving chip U4. The first motor switch unit includes a switch SW3, the second motor switch unit includes a switch SW2, the first alarm switch unit includes a switch SW5, and the second alarm switch unit includes a switch SW4.

[0082] The base of the triode Q2 is electrically connected to the output terminal of the control unit to access the control signal N_OFF. The collector of the triode Q2 is electrically connected to the input terminal (i.e., pin 2) of the driving chip U4. The emitter of the triode Q2 is grounded. The output terminals (i.e., pins 4 and 6) of the driving chip U4 are used to be electrically connected to the coil part in the relay K2.

[0083] The first input terminal of the contact head part in the relay K2 is used to access the first power supply (including the live wire LA1 and LN1). The second input terminal of the contact head part in the relay K2 is used to access the second power supply (including the live wire LA2 and LN2). The first output terminal of the contact head part in the relay K2 is electrically connected to the first access terminal of the switch SW5. The second output terminal of the contact head part in the relay K2 is electrically connected to the first access terminal of the switch SW4. The output terminal of the contact head part in the relay K2 is also electrically connected to the neutral power supply terminal MN of the actuator motor M through the manual / automatic switch S1.

[0084] The second access terminal of the switch SW5 is electrically connected to the first live wire power supply terminal M+ of the actuator motor M through the switch SW3. The second access terminal of the switch SW4 is electrically connected to the second live wire power supply terminal M- of the actuator motor M through the switch SW2.

[0085] Among them, when the manual / automatic switch S1 is closed, the actuator motor M is in the automatic switching control mode.

[0086] Taking the driving chip U4 as the low-level driving mode as an example:

[0087] On this basis, when the control unit outputs a high-level control signal N_OFF, the triode Q2 conducts, and the driving chip U4 accesses a low level, thereby conducting its pin 6 and pin 4. At this time, the live wire LA1 of the first power supply passes through the coil of the relay K2, pin 6 of the driving chip U4, pin 4, and the neutral wire LN1 of the first power supply to form a current loop, and the relay K2 operates. At this time, the live wire LA1 and the neutral wire LN1 of the first power supply respectively pass through the switch SW5, the switch SW3, and the manual / automatic switch S1 to form a loop with the first live wire power supply terminal M+ and the neutral power supply terminal MN of the actuator motor M, so that the first power supply supplies power to the actuator motor M, and the actuator motor M rotates in the first rotation direction.

[0088] Similarly, when the control unit outputs a low-level control signal N_OFF, the triode Q2 is cut off, and the drive chip U4 is connected to the high-impedance state, thereby disconnecting its pin 6 and pin 4. At this time, the live wire LA1 of the first power supply cannot form a current loop through the coil of the relay K2, pin 6 of the drive chip U4, pin 4, and the neutral wire LN1 of the first power supply, and the relay K2 does not act. At this time, the live wire LA2 and the neutral wire LN2 of the second power supply are respectively connected to the second live wire power supply terminal M- and the neutral wire power supply terminal MN of the actuating motor M through the switch SW4, the switch SW2, and the manual / automatic switch S1 to form a loop, so that the second power supply supplies power to the actuating motor M, and the actuating motor M rotates in the second rotation direction.

[0089] As Figure 6 shown, in one embodiment, the dual-power supply control system further includes a switching power supply unit.

[0090] The input end of the switching power supply unit is used to connect to the first power supply and the second power supply, and the output end of the switching power supply unit is electrically connected to the power supply end of the control unit.

[0091] The switching power supply unit is used to convert the alternating current input by the first power supply or the second power supply and output the corresponding direct current to the control unit.

[0092] Among them, adopting the switching power supply method can effectively reduce the volume of the circuit board and can adapt to the CB-level control scheme compared with the transformer step-down and resistor-capacitor step-down methods.

[0093] Among them, in other embodiments, the switching power supply unit can also be only used to connect to the first power supply or the second power supply.

[0094] As Figure 7 shown, in one embodiment, the switching power supply unit includes a varistor RV1, a rectifier diode D6, an input filtering component, a switching power supply chip U2, and an output filtering component. The input filtering component includes a capacitor CE1, an inductor L1, and a capacitor CE2, and the output filtering component includes a capacitor CE3.

[0095] The first end of the varistor RV1 is electrically connected to the anode of the rectifier diode D6 and is used to be electrically connected to the live wire LA1 of the first power supply, and the second end of the varistor RV1 is used to be electrically connected to the neutral wire LN1 of the first power supply.

[0096] The cathode of the rectifier diode D6 is respectively electrically connected to the first end of the capacitor CE1 and the first end of the inductor L1. The second end of the inductor L1 and the first end of the capacitor CE2 are respectively electrically connected to the input end SW of the switching power supply chip U2. The output end Vout of the switching power supply chip U2 is electrically connected to the first end of the capacitor CE3 and is electrically connected to the power supply end of the control unit to output a working voltage of +5V.

[0097] The second terminal of capacitor CE1, the second terminal of capacitor CE2, the ground terminal GND of switching power supply chip U2, and the second terminal of capacitor CE3 are respectively used for grounding.

[0098] Among them, varistor RV1 is used for surge protection to avoid damage to subsequent devices by large voltages.

[0099] Among them, rectifier diode D6 is used to convert the alternating current output by the first power supply into direct current.

[0100] Among them, capacitor CE1, inductor L1, and capacitor CE2 are used to realize filtering on the input side of switching power supply chip U2.

[0101] Among them, switching power supply chip U2 is used to control the on and off of the output circuit by pulse width modulation and based on the built-in switching transistor, so as to achieve the purpose of voltage adjustment.

[0102] Among them, capacitor CE3 is used to realize filtering on the output side of switching power supply chip U2.

[0103] As Figure 6 shown, in one embodiment, the power supply control system of the dual power supply further includes an acquisition unit.

[0104] The acquisition unit is electrically connected to the input end of the control unit and is used to acquire the power supply signals of the first power supply and the second power supply and feedback them to the control unit.

[0105] Among them, the acquisition unit simultaneously acquires the power supply signals of the first power supply and the second power supply. In other embodiments, it is also possible to only acquire the power supply signal of the first power supply or the second power supply to reduce costs.

[0106] Among them, based on the acquisition unit, the control unit can judge whether it is currently suitable to select the first power supply or the second power supply according to the feedback power supply signal, so as to output a corresponding control signal to the channel switching unit.

[0107] As Figure 8 shown, in one embodiment, for the live wire LA1 of the first power supply, the acquisition unit includes resistor R3, resistor R4, resistor R7, filter capacitor C1, and a clamping device (including clamping diode D3). The first end of resistor R4 is used to be electrically connected to the live wire LA1 of the first power supply through resistor R3. The second end of resistor R4 is respectively electrically connected to the first end of filter capacitor C1, the first end of clamping diode D3, and the first end of resistor R7 and is used to be electrically connected to the input end of the control unit to output the sampled power supply signal IN_ADC_A1. The second end of filter capacitor C1 is used for grounding. The second end of clamping diode D3 is used to connect to a clamping voltage (including GND and +5V), and the second end of the second voltage dividing resistor R7 is used to connect to the reference voltage Vref.

[0108] Among them, the ratio between the resistance value of resistor R7 and the total resistance value of resistor R3, resistor R4, and resistor R7 is the voltage division ratio.

[0109] Among them, the clamping diode D3 can conduct when the amplitude of the output power supply signal IN_ADC_A1 is higher than +5V or lower than GND, short-circuiting the subsequent circuit to achieve voltage clamping.

[0110] Among them, the reference voltage Vref is set according to requirements, or it can be connected to the neutral line LN1 of the first power supply.

[0111] Similarly, for the live wire LB1 of the first power supply, the acquisition unit includes resistor R10, resistor R11, resistor R16, filter capacitor C2, and a clamping device (including clamping diode D4). The first end of resistor R11 is used to be electrically connected to the live wire LB1 of the first power supply through resistor R10. The second end of resistor R11 is respectively electrically connected to the first end of filter capacitor C2, the first end of clamping diode D4, and the first end of resistor R16 and is used to be electrically connected to the input end of the control unit to output the sampled power supply signal IN_ADC_B1. The second end of filter capacitor C2 is used to be grounded. The second end of clamping diode D4 is used to access the clamping voltage (including GND and +5V). The second end of resistor R16 is used to access the reference voltage Vref.

[0112] Similarly, for the live wire LC1 of the first power supply, the acquisition unit includes resistor R17, resistor R18, resistor R22, filter capacitor C3, and a clamping device (including clamping diode D5). The first end of resistor R18 is used to be electrically connected to the live wire LC1 of the first power supply through resistor R17. The second end of resistor R18 is respectively electrically connected to the first end of filter capacitor C3, the first end of clamping diode D5, and the first end of resistor R22 and is used to be electrically connected to the input end of the control unit to output the sampled power supply signal IN_ADC_C1. The second end of filter capacitor C3 is used to be grounded. The second end of clamping diode D5 is used to access the clamping voltage (including GND and +5V). The second end of resistor R22 is used to access the reference voltage Vref.

[0113] Based on the above sampling unit, when the control unit has obtained the relevant data of the first power supply through the sampling unit, it can Figure 9 indicate the status of the first power supply through the first indicating unit shown. Specifically, the first indicating unit includes resistor R1 and light-emitting diode LED1. When the first power supply has power output, the control unit outputs a voltage of +5V to resistor R1, thereby driving the light-emitting diode LED1 to emit light to achieve the indication of the first power supply.

[0114] As a difference, when the control unit has not obtained the relevant data of the second power supply through the sampling unit, it can Figure 10The second indicating unit shown is used to indicate the state of the second power supply. Specifically, the second indicating unit includes a rectifying diode D2, a resistor R8, a resistor R9, a resistor R2, and a light-emitting diode LED2. The second indicating unit is electrically connected to the second power supply through a terminal P3. When the second power supply outputs electrical energy, the alternating current output is rectified by the rectifying diode D2 and then applied to the light-emitting diode LED2 after voltage division by the resistors R8, R9, and R2, thereby driving the light-emitting diode LED2 to emit light and realizing the indication of the second power supply.

[0115] In the above embodiments, the descriptions of the various embodiments each have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the detailed descriptions of other embodiments above, and they will not be elaborated here.

[0116] The above has introduced in detail a power supply control system for a dual power supply. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

[0117] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

Claims

1. A dual power supply control system, characterized in that: The dual power supply control system includes an execution switch unit, an execution motor, a motor switch unit, a trip unit and an alarm switch unit; The execution switch unit is used to be electrically connected to the first power supply, the second power supply and the load respectively and mechanically connected to the execution motor, and is used to open and close the switch under the drive of the execution motor to control the connection and disconnection of the lines between the first power supply and the second power supply and the load respectively; The motor switch unit is electrically connected to the execution motor and the alarm switch unit respectively and mechanically connected to the execution motor, and is used to be electrically connected to the first power supply and the second power supply through the alarm switch unit, and is used to control the execution motor to perform corresponding drive control according to the connected first power supply or the second power supply and disconnect after the execution motor completes the corresponding drive control; The trip unit is mechanically connected to the execution switch unit and the alarm switch unit respectively, and is used to open the execution switch unit and disconnect the alarm switch unit when the first power supply or the second power supply fails.

2. The dual power supply control system according to claim 1, characterized in that: The motor switch unit includes a first motor switch unit, a second motor switch unit and a rotating unit, and the alarm switch unit includes a first alarm switch unit and a second alarm switch unit which are mechanically connected to the trip unit respectively; The first access end of the first motor switch unit is used to access the first power supply through the first alarm switch unit, and the second access end of the first motor switch unit is electrically connected to the first power supply end of the execution motor; the first access end of the second motor switch unit is used to access the second power supply through the second alarm switch unit, and the second access end of the second motor switch unit is electrically connected to the second power supply end of the execution motor; The rotating unit is fixedly connected to the rotating shaft of the executing motor, and is used to control the first motor switch unit to be disconnected based on the driving of the executing motor in the first rotating direction after the executing motor is connected to the first power supply through the first motor switch unit; Or it is used to control the second motor switch unit to be disconnected based on the driving of the actuator motor in the second rotation direction after the actuator motor is connected to the second power supply through the second motor switch unit.

3. The dual power supply control system according to claim 2, characterized in that: The first motor switch unit includes a first micro switch, the second motor switch unit includes a second micro switch, and the rotation unit includes a rotation paddle; The first access end of the first micro switch is used to be electrically connected to the live wire of the first power supply through the first alarm switch unit, and the second access end of the first micro switch is used to be electrically connected to the first live wire power supply end of the actuator motor; The first access end of the second micro switch is used to be electrically connected to the live wire of the second power supply through the second alarm switch unit, and the second access end of the second micro switch is used to be electrically connected to the second live wire power supply end of the actuator motor; The neutral line power supply terminal of the actuator motor is used to be electrically connected to the neutral line of the first power supply and the neutral line of the second power supply respectively.

4. The dual power supply control system according to claim 2, characterized in that: The dual power supply control system also includes a control unit and a channel switching unit; The first input end of the channel switching unit is used to connect to the first power supply, the second input end of the channel switching unit is used to connect to the second power supply, the first output end of the channel switching unit is electrically connected to the first access end of the first alarm switch unit, the second output end of the channel switching unit is electrically connected to the first access end of the second alarm switch unit, and the controlled end of the channel switching unit is electrically connected to the output end of the control unit; The control unit is used to control the switching state of the channel switching unit to output the first power supply to the first alarm switch unit or to output the second power supply to the second alarm switch unit.

5. The dual power supply control system according to claim 4, characterized in that: The channel switching unit includes a driving subunit and a relay; The input end of the driving subunit is electrically connected to the output end of the control unit, the output end of the driving subunit is electrically connected to the coil part in the relay, the first input end of the contact part in the relay is used to connect to the first power supply, the second input end of the contact part in the relay is used to connect to the second power supply, the first output end of the contact part in the relay is electrically connected to the first access end of the first alarm switch unit, and the second output end of the contact part in the relay is electrically connected to the first access end of the second alarm switch unit.

6. The dual power supply control system according to claim 5, characterized in that: The driving subunit includes a triode and a driving chip; The base of the transistor is electrically connected to the output end of the control unit, the collector of the transistor is electrically connected to the input end of the driving chip, the emitter of the transistor is used for grounding, and the output end of the driving chip is used for electrically connecting to the coil part in the relay.

7. The dual power supply control system according to claim 4, characterized in that: The dual power supply control system also includes a switching power supply unit; The input end of the switching power supply unit is used to connect to the first power supply and / or the second power supply, and the output end of the switching power supply unit is electrically connected to the power supply end of the control unit; The switching power supply unit is used to convert the alternating current input by the first power supply or the second power supply, and output the corresponding direct current to the control unit.

8. The dual power supply control system according to claim 7, characterized in that: The switching power supply unit includes a varistor, a rectifier diode, an input filter component, a switching power supply chip and an output filter component; The first end of the varistor is electrically connected to the anode of the rectifier diode and is used to be electrically connected to the live wire of the first power supply and / or the live wire of the second power supply, and the second end of the varistor is electrically connected to the second input end of the input filter component and is used to be electrically connected to the neutral wire of the first power supply and / or the neutral wire of the second power supply; The cathode of the rectifier diode is electrically connected to the first input end of the input filter component, the first output end of the input filter component is electrically connected to the input end of the switching power chip, the output end of the switching power chip is electrically connected to the first input end of the output filter component, and the output end of the output filter component is electrically connected to the power supply end of the control unit; The second output end of the input filter component, the ground end of the switching power supply chip, the second input end of the output filter component and the second output end of the output filter component are used for grounding respectively.

9. The dual power supply control system according to claim 4, characterized in that: The dual power supply control system also includes a collection unit; The acquisition unit is electrically connected to an input terminal of the control unit, and is used for acquiring power signals of the first power source and / or the second power source and feeding back the power signals to the control unit.

10. The dual power supply control system according to claim 9, characterized in that: The acquisition unit includes a first voltage-dividing resistor, a second voltage-dividing resistor, a filter capacitor and a clamping device; The first end of the first voltage-dividing resistor is used to be electrically connected to the live wire of the first power supply and / or the live wire of the second power supply, and the second end of the first voltage-dividing resistor is respectively electrically connected to the first end of the filter capacitor, the first end of the clamping device and the first end of the second voltage-dividing resistor and is used to be electrically connected to the input end of the control unit; The second end of the filter capacitor is used for grounding, the second end of the clamping device is used for connecting to the clamping voltage, and the second end of the second voltage-dividing resistor is used for connecting to the reference voltage.

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